The global one is executed after all files have been processed.
A per-file command is executed after that file has been copied (if it
was copied successfully).
Command line specifiers are supported in both cases. In the global
command, %f is the TIC file path, and %s is the extraction dir.  In
a per-file command, %f is the destination file, and %s is the source.
This will remain untested until I receive some files to process.